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The Ras Gene

The Ras Gene

The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a superfamily...

The Ras Gene

The Ras Gene

The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a superfamily...

Relationship Formation

Relationship Formation

What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...

Relationship Growth

Relationship Growth

Interpersonal relationships progress through stages, beginning with awareness and moving toward mutuality, where emotional connections deepen. While many relationships remain at moderate levels of mutuality, deeper connections form through self-disclosure, trust, and interdependence.Self-DisclosureSelf-disclosure involves revealing personal information, starting with surface-level details and gradually progressing to more intimate content. As trust grows, individuals feel more comfortable...

Understanding Interpersonal Attraction

Understanding Interpersonal Attraction

Interpersonal attraction is a fundamental psychological phenomenon influencing human relationships across various contexts. It refers to one person's positive feelings or interests toward another, serving as the foundation for friendships, romantic partnerships, familial bonds, and professional relationships. The nature of interpersonal attraction extends beyond romantic connections, shaping interactions in both short-term and long-term social engagements.Psychological Foundations of...

Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

Ideally, an unpaired electron shows a single peak in the EPR spectrum due to the transition between the two spin energy states. However, coupling interactions can occur between the spins of the unpaired electron and any neighboring spin-active nuclei. This hyperfine coupling results in hyperfine splitting, where the EPR signal is split into multiplets. The signals split into 2nI + 1 peaks, where n is the number of equivalent nuclei and I is the nuclear spin. These splitting patterns provide...

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Related Experiment Video

Updated: Jun 24, 2026

RNA-Associated Chromatin DNA-DNA Interaction Method

RNA-Associated Chromatin DNA-DNA Interaction Method

Published on: April 30, 2026

Ras and pRb: the relationship gets yet more intimate.

Daniel S Peeper¹

¹Division of Molecular Genetics, The Netherlands Cancer Institute, Amsterdam, The Netherlands. d.peeper@nki.nl

|April 7, 2009

Summary

Researchers uncovered a new signaling network connecting Ras and pRb, crucial for regulating cell growth and preventing tumors. This discovery sheds light on cellular senescence and tumor suppression mechanisms.

Area of Science:

Molecular Biology
Cell Biology
Oncology

Background:

Ras and pRb are critical regulators of cell proliferation, differentiation, and tumorigenesis.
Existing research has identified several communication pathways between Ras and pRb.
Understanding these interactions is vital for cancer research.

Purpose of the Study:

To elucidate a novel signaling network involving Ras and pRb.
To investigate the role of this network in cellular senescence.
To explore its implications in tumor suppression.

Main Methods:

The study utilized advanced molecular and cellular biology techniques.
Investigated signaling pathways and protein interactions.
Assessed cellular responses related to senescence and proliferation.

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Sample Preparation for Mass Spectrometry-based Identification of RNA-binding Regions

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Last Updated: Jun 24, 2026

RNA-Associated Chromatin DNA-DNA Interaction Method

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RBDT: A Computerized Task System based in Transposition for the Continuous Analysis of Relational Behavior Dynamics in Humans

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Sample Preparation for Mass Spectrometry-based Identification of RNA-binding Regions

Sample Preparation for Mass Spectrometry-based Identification of RNA-binding Regions

Published on: September 28, 2017

Main Results:

A new signaling network linking Ras and pRb was identified.
This network plays a significant role in initiating cellular senescence.
The findings provide new insights into tumor suppression mechanisms.

Conclusions:

The newly discovered Ras-pRb signaling network is a key player in cellular senescence and tumor suppression.
This research expands our understanding of fundamental cancer biology.
Further investigation could lead to novel therapeutic strategies.